What Size Parts Can a Magnetic Conveyor Handle?

Magnetic conveyors are reliable, low-maintenance solutions for moving ferrous scrap, but they do have limits. The size, shape, and consistency of the parts being conveyed all affect whether the conveyor will run smoothly or struggle with jams, buildup, or inconsistent movement.

Understanding these limits before selecting a conveyor is important. A magnetic conveyor is not sized by part weight alone. The usable conveyor width, part length, magnet spacing, and discharge design all need to work together for the system to perform properly.

Usable Conveyor Width

The first limiting factor is the usable width of the conveyor. This is not the overall outside dimension of the conveyor frame. It is the clear distance between the side guides.

This measurement determines the maximum part width the conveyor can handle without creating a high risk of jamming. If a part is too wide and rotates sideways while being conveyed, it can contact both side guides at the same time and lock into place.

A good rule is to leave clearance between the part and the side guides. For example, if a conveyor has 24 inches of clear width between the guides, the parts should be slightly smaller, typically around 23.5 inches or less. This gives the material room to move and reduces the chance of a part turning sideways and getting stuck.

Ignoring this clearance is one of the most common causes of problems in wide-part applications.

Magnetic slide conveyors can also be built in very wide configurations when required. Single slider bed designs have been used successfully in applications exceeding 60 inches in width. This allows magnetic conveyors to handle large stampings and wide ferrous components, as long as the system is designed around the actual part dimensions.

Part Length and Magnet Spacing

The second major factor is part length. Magnetic conveyors move material using internal magnets mounted to a chain. These magnets are spaced at specific intervals and move underneath the slider surface. As the magnets travel, they pull the ferrous part forward along the conveyor.

This works best when a part is primarily influenced by one magnetic zone at a time.

Problems can occur when a part is long enough to span across multiple magnets at once. In that situation, one magnet may be trying to move the part forward while another magnet is still holding it back. Instead of advancing smoothly, the part may stay in place, hesitate, or create buildup on the conveyor.

To prevent this, magnet spacing needs to be designed around the length of the parts being conveyed. For example, if a part is 24 inches long, the magnets may need to be spaced farther apart, such as 30 inches, so the part is primarily controlled by one magnet at a time.

This is one of the most important engineering considerations when handling long stampings, trim scrap, or larger ferrous parts.

Conveyor Head and Discharge Design

The third factor is the head design of the conveyor, especially when the conveyor includes an incline.

As parts move up the conveyor, they eventually need to transition around the head section and discharge into a bin, hopper, chute, or other collection point. For short, compact parts, this transition is usually straightforward. For longer parts, it becomes more complicated.

Long parts do not easily conform to tight radiuses. If the conveyor head has a small radius, a long part may lose magnetic contact, hang up, or fail to discharge cleanly.

For this reason, conveyors handling longer parts may require a larger, more gradual head radius. A larger radius helps support the part through the transition and gives the material a better chance of discharging in a controlled manner.

This is especially important in applications involving hot stamped components, large trimming off-fall, or wide pieces of ferrous scrap.

Consistency of Part Size and Shape

Part consistency also matters. Magnetic conveyors perform best when the parts or scrap pieces are relatively consistent in size, shape, and behavior.

When an application includes a wide range of part sizes, the conveyor becomes harder to optimize. Short pieces, long pieces, flat parts, nested parts, and irregular scrap can all behave differently on the same conveyor.

In these cases, the safest approach is usually to design around the largest or most difficult part. If the conveyor can reliably handle the most challenging piece, it is more likely to handle the rest of the material without issues.

So, What Size Parts Can a Magnetic Conveyor Handle?

There is no single universal answer. A magnetic conveyor can handle small ferrous scrap, large stampings, and wide components, but the system must be designed around the application.

The most important questions are:

1. How wide is the part compared to the usable conveyor width?
2. How long is the part compared to the magnet spacing?
3. Can the part transition properly over the discharge head?
4. Are the parts consistent, or do they vary significantly in size and shape?

When these factors are properly evaluated, magnetic conveyors can handle a wide range of ferrous part sizes with reliable performance. When they are overlooked, even a well-built conveyor can experience jams, poor discharge, or inconsistent movement.

The best approach is to review the actual part dimensions, scrap shape, and discharge requirements early in the conveyor design process. This helps ensure the conveyor is built to match the material, not just the available floor space.

FAQ: Magnetic Conveyor Part Size

What is the maximum part size a magnetic conveyor can handle?

There is no single maximum part size. A magnetic conveyor’s capacity depends on the usable conveyor width, part length, magnet spacing, discharge design, and the shape of the part. Large ferrous stampings and wide components can be handled successfully when the conveyor is designed around the actual part dimensions.

Can a magnetic conveyor handle wide parts?

Yes, magnetic conveyors can handle wide ferrous parts, but the part must fit within the usable conveyor width. The usable width is the clear space between the conveyor side guides, not the overall frame width. If the part is too wide and turns sideways, it may contact both side guides and jam.

Why does part length matter on a magnetic conveyor?

Part length matters because the part can span across multiple internal magnets at the same time. When that happens, one magnet may pull the part forward while another holds it back. This can cause hesitation, buildup, or blockage. Magnet spacing should be selected based on the length of the parts being conveyed.

Can a magnetic conveyor handle long stampings or trim scrap?

Yes, but long stampings or trim scrap may require special design considerations. Longer parts may need wider magnet spacing and a larger head radius so they can transition smoothly over the discharge end of the conveyor without hanging up or losing magnetic contact.

What information is needed to size a magnetic conveyor properly?

The most important information includes the part width, part length, part thickness, material type, scrap shape, expected volume, conveyor angle, discharge requirements, and whether the parts are consistent or vary in size. Providing actual part samples, drawings, or photos helps ensure the conveyor is designed correctly.

Written by the engineering and applications team at Storch Magnetics, specializing in magnetic conveyors and industrial magnetic solutions.